package com.miracle.config;

import com.miracle.shiro.CustomerRealm;
import com.miracle.shiro.cache.RedisCacheManager;
import org.apache.shiro.authc.credential.HashedCredentialsMatcher;
import org.apache.shiro.cache.ehcache.EhCacheManager;
import org.apache.shiro.realm.Realm;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.Map;

/**
 * @author jie.xi
 * @date 2022年04月18日 9:55
 * 用来整合shiro框架相关配置类
 */
@Configuration
public class ShiroConfig {
    //1.创建shiroFilter，负责拦截所有请求
    @Bean
    public ShiroFilterFactoryBean getShiroFilterFactoryBean(DefaultWebSecurityManager defaultWebSecurityManager){
        ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
        //给filter设置安全管理器
        shiroFilterFactoryBean.setSecurityManager(defaultWebSecurityManager);
        //配置系统受限资源
        //配置系统公共资源
        Map<String,String> map = new HashMap<>();
        //将登录设置为anon,代表为公共资源
        map.put("/user/login","anon");
        map.put("/user/register","anon");
        map.put("/register.jsp","anon");
        //请求这个资源需要认证和授权，**代表所有资源
        map.put("/**","authc");
        //设置默认认证界面路径
        shiroFilterFactoryBean.setLoginUrl("/login.jsp");
        shiroFilterFactoryBean.setFilterChainDefinitionMap(map);

        return shiroFilterFactoryBean;
    }
    //2.创建安全管理器
    @Bean
    public DefaultWebSecurityManager getDefaultWebSecurityManager(Realm realm){
        DefaultWebSecurityManager defaultWebSecurityManager = new DefaultWebSecurityManager();
        //给安全管理器设置real
        defaultWebSecurityManager.setRealm(realm);
        return defaultWebSecurityManager;
    }
    //3.创建自定义realm
    @Bean
    public Realm getRealm(){
        CustomerRealm customerRealm = new CustomerRealm();
        //修改凭证校验匹配器
        HashedCredentialsMatcher credentialsMatcher = new HashedCredentialsMatcher();
        credentialsMatcher.setHashAlgorithmName("MD5");
        //设置散列次数
        credentialsMatcher.setHashIterations(1024);
        customerRealm.setCredentialsMatcher(credentialsMatcher);

        //开启缓存管理
        customerRealm.setCacheManager(new RedisCacheManager());
        customerRealm.setCachingEnabled(true);//开启全局缓存
        customerRealm.setAuthenticationCachingEnabled(true);//认证认证缓存
        customerRealm.setAuthenticationCacheName("authenticationCache");
        customerRealm.setAuthorizationCachingEnabled(true);//开启授权缓存
        customerRealm.setAuthorizationCacheName("authorizationCache");
        return customerRealm;
    }
}
